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If anyone wants to avoid learning emacs for this course, alternatives are: 1) DrScheme gui (maybe a few inconsistencies with mit code there? Didnt test for myself) 2)Vim + gnu screen with some little tweaking(split window between vim and repl interpreter) + SaneCL plugin for auto-indenting. Syntax highlight works when editing .scm files, parenthesis matching also, auto-indenting seems to work too.

MIT 6.001 Structure and Interpretation of Computer Programs, Spring 2005
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PS: i think second solution is for unix or linux systems only, but may be viable in other systems with a program like gnu screen. Hope this helps some people, and sorry for the wall of text too.
  • Tim
Could you tell me about the second combination? Currently I use vim to write the code and then I load the file inside the interpreter. Do I miss a lot?
I don't think you're missing much except the readily accessible REPL (Read Eval Print Loop) which functions nicely in the MIT provided Edwin/Emacs environment. It's available at the link below.

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Yes podcherklife ill give some more detail. I found the instruntctions to integrate vim with repl environment (mit scheme in my case) at Also, in vim version 7.2.2 that i use, if i am editing a file with approriate extension (.scm), syntax highlighting and parenth. matching works. The SaneCL plugin is found at Hope this helps
PS no 2: at the above case, when split window mode between vim and repl, you can with ctr+c twice on marked code eval the code in repl. maybe you miss something more sophisticated, but i think the basics are there
This setup works really well for doing Scheme exercises, thanks for sharing! Do you know if it's possible to get an edwin-style Scheme debugger in the vim+repl setup described above? Or is it time to jump ship to a different editor if I need that functionality?
I'm sure it's *possible* to get such a debugger, but I'm not sure how you would do it, honestly. Vim is capable of many things, but that doesn't mean someone's already done it :)
As much as I am married to vim due to my muscle memory and its leanness, I'm not averse to switching editors if it's worth it. If there's an alternative to the mit-scheme REPL i'm using that has some sort of a built-in debugger that would work fine. If not, I might check out DrRacket or Edwin/Emacs, as I think there's a huge advantage in understanding to be able to step through code in a debugger. Also, the inherent lisp orientation of those editors (in particular the features I've heard described in DrRacket) sound quite nice. And if I do go with an emacs flavor, I guess there's always viper-mode. :)

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